Method of treating and collecting yarn

ABSTRACT

Method of and apparatus for treating and collecting yarn that includes a yarn coating device; an interim yarn take-up; automatic start-up of yarn collection by the primary yarn collector from the interim take-up; and means preventing yarn coating during yarn take-up by the interim yarn take-up.

United States Patent [191 Benson et 211.

[ Feb. 25, 1975 METHOD OF TREATING AND COLLECTING YARN [75] Inventors: Gustav E. Benson, Edgewood;

Everett W. Taylor, Cumberland, both of R1.

[73] Assignee: Owens-Corning Fiberglass Corporation, Toledo, Ohio [22] Filed: June 6, 1973 [21] App]. No.: 367,592

Related US. Application Data [62] Division of Ser. No. 241,173, April 5, 1972, Pat. No.

[52] US. Cl. 28/72 SP, 28/72 l2, 28/75 WT [51] Int. Cl D02g 1/16, B65h 55/04 [58] Field of Search... 28/1.4, 72 SP, 72.12, 75 WT [56] References Cited UNITED STATES PATENTS Far rand et al 28/72 SP 3,305,910 2/1967 Clement 28/1.4 3,749,055 7/1973 Benson 28/1.4 X 3,750,922 8/1973 Bethea 28/l.4 X

Primary Examiner-Louis K. Rimrodt Attorney, Agent, or Firm.lohn W. Overman; Carl G. Staelin; Ronald C. Hudgens [57] ABSTRACT Method of and apparatus for treating and collecting yarn that includes a yarn coating device; an interim yarn take-up; automatic start-up of yarn collection by the primary yarn collector from the interim take-up; and means preventing yarn coating during yarn takeup by the interim yarn take-up.

3 Claims, 9 Drawing Figures PATENTEU FEB 2 5 I975 SHEEI 3 OF 3 METHOD OF TREATING AND COLLECTING YARN This is a division of application Ser. No. 241,173, filed Apr. 5, 1972, now Pat. No. 3,776,183, granted 12/4/73.

BACKGROUND OF THE INVENTION Bundles of textile filaments such as yarn are commonly treated with liquid for a variety of reasons Hence, it is common practice to collect wet yarns as a wound package on textile winding apparatus. And in many operations where liquid is applied to yarn it is necessary to remove the yarn from a serving package during winder start-up. Yarn processed at start-up in these operations tend to be outside product specifications. Accordingly, interim yarn collecting apparatus is often necessary, especially in high speed yarn processing operations.

But in certain instances prior art interim collecting apparatus used together with winders have had difficulty collecting wet yarn during winder start-up. And the difficulty becomes more acute when apparatus feeds wet yarn at high speeds to a winder during start- Heretofore, people circumvented interim yarn collection problems during winder start-up by applying liquid to yarn only after a winder began to collect the yarn as a wound package. However, such procedures build packages that include several initial package layers of yarn without liquid treatment applied to them.

Many textile improvements, including improved and more mechanized textile operations, require wound serving packages that provide yarns uniformily treated along their entire length. For example, it is common practice in many textile operations to join the yarn end of one package with the beginning yarn end of another package, referred to in the art as tie-on-tails, to effect a continuous processing operation. Hence, people could no longer ignore difficulties inherent in building a wound package of liquid treated yarn.

SUMMARY OF THE INVENTION An object of the invention is an improved method of and apparatus for treating and collecting yarn.

Another object of the invention is an improved method of and apparatus for handling yarn before wet treating the yarn and collecting the treated yarn into a wound package.

Still another object of the invention is improved method of and apparatus for handling yarn at the startup of rotary collection means upon which yarn treated with a liquid is wound.

Yet another object of the invention is improved method of and apparatus for forming a wound package with tie-on-tails.

These and other object are obtained by apparatus for supplying yarn and means operable to provide a liquid or other coating treatment to the yarn prior to collection by a yarn collection means. Further, the apparatus includes means for automatic start-up of yarn collection by the yarn collection means; interim means for variable speed take-up of the yarn between periods of collection by the collection means; and means for preventing coating treatment of the yarn during take-up of the yarn by the interim take-up means.

Other objects and advantages of the invention will become more apparent as the invention is described hereinafter in more detail with reference made to the accompanying drawings.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a front elevation view of apparatus according to the principles of the invention during normal operations after start-up. The apparatus includes yarn texturing apparatus, apparatus for applying liquid to textured yarn, rotary collection means for collecting the treated textured yarn into a wound package and interim yarn take-up means.

FIG. 2 is a perspective view of controls-for the apparatus shown in FIG. 1.

FIG. 3 is a more schematic showing of the controls shown in FIG. 2.

\ FIG. 4 is 'a front elevation view illustrating interim yarn collection early in the start-up of the apparatus shown in FIG. 1.

FIG. 5 is a side elevation view of the apparatus and conditions shown in FIG. 4.

FIG. 6 is a front elevation view illustrating interim yarn collection towards the end of the start-up of apparatus shown in FIG. 1.

FIG. 7 is a side elevation view of the apparatus and conditions shown in FIG. 6.

FIG. 8 is a plane view of a portion of a yarn member hold-off included in the apparatus shown in FIG. 1.

FIG. 9 is a front elevation view of other apparatus according to the principles of the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus for and method of the invention are especially useful in high speed glass yarn texturing op erations where apparatus applies a liquid treatment to the textured glass yarn. But the invention is useful in other processing operations where a treatment other than a wet treatment is applied to a bundle of filaments. For example, the invention can be used where a coating of discrete resinous particles or powder is applied to an advancing bundle of filaments. Also, the filaments can be of fiber forming material, such as nylon, rayon, or other organic or inorganic compositions, in addition to glass. Further, the invention handles either twisted or untwisted filament bundles. Hence, in the specification and claims the term yarn includes any bundle of filamerits, including continuous and discontinuous synthetic filaments, in-addition-to bundles of natural fibers.

FIG. 1 shows an embodiment of apparatus for treating and collecting glass yarn 10 at high linear yarn speeds according to the principles of the invention. In

FIG. 1 the apparatus is illustrated in normal yarn collecting operation after start-up. The apparatus includes a yarn texturing portion 12, including a yarn advancing arrangement 14; a yarn collecting machine 16 for taking-up yarn fed to it; and interim yarn handling and collecting apparatus for taking-up yarn during start-up of the apparatus. The apparatus also embraces means for applying a wet treatment to the yarn 10 after the yarn has been textured (the reference numeral 10' denoteos the textured glass yarn). The means for applying wet treatment is shown in the specific form of a liquid applying applicator 18.

A vertically disposed serving package 20 supported on a platform 22 supplies the yarn 10 to the yarn texturing portion 12. As shown, the yarn l0 balloons upwardly from the package 20 and turns on a pigtail 24 to advance along ahorizontal path to the yarn texturing portion 12.

The yarn texturing portion 12 includes a pair of cooperating pairs of yarn engaging feed rolls 26 and 27 and 28 and 29 and a fluid yarn texturing nozzle or jet 30. The nozzle 30 is between the pairs of rolls. An electric motor and drive arrangement rotates the pairs of rolls together at different angular speeds to feed the yarn 10 to and advance the textured yarn 10 from' the nozzle 30. The feed rolls 26 and 27 are driven faster than the feed rolls 28 and 29 to provide yarn that is overfed to the nozzle 30. Thus, the rolls 26 and 27 feed yarn 10 to the nozzle 30 at a faster linear yarn speed than the rolls 28 and 29 advance textured yarn 10' from the nozzle 30. In operation, the yarns may be supplied to the nozzle at linear yarn speeds up to 3,000 feet-per-minute or faster.

The nozzle 30 has a yarn entrance end 34 and a yarn exit or outlet end 36. A fluid supply line 38 connects at its remote end to a source of fluid under pressure. The line 38 supplies such fluid, normally air, under pressure to the interior of the nozzle 30. The construction and operation of fluid texturing nozzles are known in the prior art, but it has been useful to use nozzles such as those disclosed in US. Pat. Nos. 3,328,863 and 3,402,446. Air escaping from the nozzle 30 at its yarn exit end 36 creates a zone of fluid agitation that textures yarn exiting the nozzle 30 from the yarn exit end 36.

The rolls 28 and 29 are below the exit end 36 of the nozzle 30. Hence, these rolls abruptly change the path of the yarn 10 exiting the nozzle 30 from a horizontal yarn path through the nozzle 30 to a path running vertically downwardly. The rolls 28 and 29 advance the yarn l downwardly to a yarn turning surface 40, which is shown as the circumferential surface of a rotatable roller 44.

Between the rolls 28 and 29 and the yarn turning surface 40 the traveling textured yarn engages the liquid transferring applicator 18. As shown the applicator 18 is a driven cylinder rotatably carried by a housing 46. Liquid, such as a sizing or other coating material, is supplied to the housing 46 in a conventional manner. As the cylindrical applicator 18 turns, it moves through the liquid held in the housing 46. The speeding textured glass yarn 10 engages the moving wet circumferential surface of the applicator l8 and liquid on the circumferential surface transfers to the moving yarn 10'.

In the embodiment shown, the roller 44 is part of the yarn collecting machine 16, which is shown as a constant tension take-up such as those commercially available from a number of manufacturers. For example, it has been useful to use a 959 Take-Up Machine manufactured by the Leesona Corporation, Warwick, Rhode Island.

The yarn take-up machine 16 includes means for sensing the tension in the advancing yarn that comprises a pivotally mounted tension sensing arm 48 and electrical or electrical mechanical controls to vary the rotational speed of the driven rotatable mandrel or collet 50 in response to tension sensed in yarn by the tension sensing arm 48.

The tension sensing arm 48 is pivotally mountedat one end and rotatably carries the roller 44 at the other end.

During package formation the textured yarn 10 advances from the roller 44 to collect as a wound package 52 on a collector such as a tube 54 telescoped on the driven collet 50.

The yarn collecting machine 16 includes a yarn traversing assembly 60 that comprises yarn traverse guide 62 that is reciprocated axially of the collet 50 on a movable support 64 by a suitable means such as a cylindrical cam to distribute the textured yarn 10 on the package 52. The moving yarn traverse guide 62 automatically captures and reciprocates yarn provided to it.

A roller bail 66 is shown carried by the support 64 for laying yarn onto the circumferential surface of the package 52. The roller bail 66 is shown above the yarn traverse guide 62.

The machine 16 includes automatic start-up for collection of yarn on the collet 50. As seen more clearly in FIGS. 5 and 7 the free end of the mandrel or collet 50 provides a circular flange or shoulder 68 against which yarn movesas yarn turns or bends on the free end of the collet 50. Also, included at the free end of the collet 50 is a centrifugally actuated hook 70 that moves at a specified or selected angular collet speed to grab or engage yarn moving across the free end of the collet 50 against the shoulder 68. Upon engagement by the hook 70 yarn is secured on the collet 50 and collection of yarn can begin.

The interim yarn handling and collecting apparatus operates at the start-up of the apparatus shown in FIG. 1. In a broad sense the interim yarn handling and collecting apparatus includes interim means for variable speed take-up of yarn between periods of collection by a primary yarn collecting means and for preventing treatment of the yarn by a treatment means, such as the applicator 18, during take-up of yarn by the interim yarn take-up means. The interim handling and collecting means embraces use of automatic start-up of yarn collection by the primary yarn collection means and includes means for severing yarn at a location between the primary yarn collecting means and the interim yarn take-up means.

In a more specific sense, the interim yarn handling and collecting apparatus is capable of operating in cooperation with yarn feed means and includes interim means for taking-up yarn fed to it at a speed matched to the yarn feed speed as a rotary collector, such as the collet 50 is brought up to a predetermined rotational speed effective to take-up yarn at a linear speed matched to the yarn feed speed. Further, the interim handling and take-up apparatus includes means for preventing application of a coating or liquid to yarn during collection by the variable speed interim yarn take-up means. And the yarn handling and take-up apparatus includes means effective to transfer collection of the yarn from the interim collecting means, including yarn severing means, to a temporary collectionlocation on the rotary collector when the collector is at the predetermined speed. Then, upon yarn transfer (at yarn severance), the applicator 18 is allowed to apply liquid or other coating material to yarn. Thus, some dry yarn 10' is collected at the temporary location. And the interim yarn handling and collecting apparatus is effective to allow formation of a wound package to begin at a location adjacent the temporary location only after arrival of treated yarn to the rotary collector.

Hence, the wound package 52 is made up of yarn uniformily treated along its entire length with liquid or other coating material. In the embodiment shown in FIG. 1 the interim variable speed yarn take-up is a pneumatic suction device including a suction tube 80 with a yarn entrance 82. The tube 80 communicates with a zone of reduced fluid pressure. As shown, the other end 84 of the tube 80 connects to an air moving assembly 86 that includes a container 88 and a fan 90. As the blades 92 of the fan 90 rotate, the fan 90 draws air into the entrance 82 of the suction tube 80. Located in the container 88 between the fan 90 and the air entrance of the container (end 84 of the tube 80) is a screen 94 through which air moves. The screen94 is a yarn collector and forms an element of a draw 96, which-provides easy access to the screen 94 for screen cleaning.

Adjacent the entrance end 82 of the suction tube 80 is means for sensing the presence of yarn collected by the suction device. In the embodiment shown such sensing means is a microswitch 98 having a switch arm 100 over which the yarn drawn into the tube 80 travels.

Adjacent the microswitch 98 is a yarn severing member 102 having a knife edge 104 adjacent which the yarn 10 travels to the tube 80. The member 102 is slanted towards the entrance 84 of the tube 80; therefore, under normal yarn travel to the tube 80 the member 102 does not harm or sever the speeding yarn 10.

The interim handling apparatus further includes two yarn hold-off devices. An applicator yarn hold-off 106 disengages the yarn 10 from the applicator 18. A package yarn hold-off 108 prevents formation of the wound package 52 on the collector 54 until a selected time after yarn severance by the member 102.

Referring to FIGS. 1 and 2, the applicator yarn holdoff 106 is between the rolls 28 and 29 and the applicator 18. The hold-off 106 is an electrical solenoid device moving a Y-bar armature 110. In its extended position the Y-bar armature 110 engages the advancing yarn 10 to effect disengagement of the yarn from the applicator 18. During time of such yarn disengagement, the applicator 18 does not apply liquid to the yarn 10.

The package yarn hold-off 108 is more clearly seen in FIG. 2 and includes a movably mounted rod 112 located close to the package 52 under the traverse guide 62; the rod 112 is disposed adjacent to the circumferential surface of the package 52 in a direction parallel to the axis of rotation of the collet 50 (package 52). The rod 112 moves about its longitudinal axis and includes a laterally extending pin 114 near its outer free end 116. One can see more clearly from FIG. 3 that the pin 114 is inclined away from the axis of the rod 112 towards the inner support end 118 of the rod 112. The pins angle of inclination to the rod 112 (shown as angle 0 in FIG. 8) is normally from 30 to 60. The slanted disposition of the pin 114 controls the releasing speed of the yarn 10' into the yarn traversing zone. Hence, the angle 0 can be changed to meet specific needs. I

The rod 112 is moved about its axis either to place the pin 114 in a generally horizontal yarn hold-off position or vertically downwardly disposed yarn pass position. i

A pneumatic motor and drive assembly moves a wheel gear 122 secured to the inner end 118 of the rod 112 to move the rod 112 about its longitudinal axis between the yarn hold-off position and yarn pass position. The motor and drive assembly includes a solenoid control valve 124 that supplies air to a cylinder 126 through supply tubes 128 and 130. A valve supply line 132 carries air under pressure from a suitable source, such as a compressor, to the valve 124.

Air supplied to the cylinder 126 moves a piston 138 and piston rod 140, which in turn move the rod 112.

The end region of the piston rod 140 has teeth 142 that engage the circumferential teeth 144 of the wheel gear 122.

Air supplied through the supply tube 128 extends the piston 140 to move the rod 1 12 and locates the pin 114 downwardly in the yarn pass position; air supplied through the yarn supply tube retracts the piston to move the rod 112 and locates the pin 114 in the yarn hold-off position.

In FIGS. 2 and 3 one can see the electrical arrange ment between the microswitch 98, yarn hold-off 106 and the yarn hold-off 108. The switch 98 is in a circuit supplying electrical current to the coil of the yarn hold-off 106. Electrical energy is applied to the circuit at L and L When the switch 98 is closed, the coil 150 is energized and a solenoid force established by current flowing through the coil 150 pushes or extends the Y-bar armature 110 into engagement with the textured yarn 10' as indicated in FIG. 4 and by the dashed lines in FIG. 6. When the switch 98 is open, the coil 150 is not electrically energized. Hence, a tension spring 152 on the inner end 152 of the bar 110 pulls or retracts the bar 1 10 to move it out of engagement with the yarn 10.

The inner end 154 of the bar 110 forms part of a switch 156 in a circuit supplying electrical energy to the solenoid valve 124. The switch 156 is open during times the coil 150 is electrically energized. The tension spring 152 closes the switch 156 during times the coil 150 is not energized (when the switch 98 is open). In this circuit electrical power is applied at L and L When electrically energized, the solenoid valve 124 supplies air to the cylinder through the tube 128 to locate the rod 112 and pin 114 in the yarn pass position.

A time delay relay 160 is between the solenoid valve 122 and the leads L and L Hence, the time delay relay 160 keeps electrical energy from the solenoid valve 124 for 'a selected time after the switch 156 closes.

FIGS. 4 and 5 show the path of the textured yarn 10 during initial start-up of the apparatus as the collet 50 is being brought up to a predetermined rotational speed effective to collect the yarn 10' at a linear speed matched to the yarn feed speed. The yarn texturing portion 12 advances the textured yarn 10 for take-up; the textured yarn 10' is drawn into the suction tube 80 at a speed equal to the yarn feed speed from the cooperating rolls 28 and 29. As shown the yarn 10' moves along a path from the turning surface 40 to bend or turn on the free end of the collet 50 against the shoulder 68 and then to the suction tube 80. The yarn 10' is shown turning on the collet side opposite the location of the yarn traversing assembly 60. Hence, the yarn moves in a direction against the direction of movement of the rotating collet 50.

The suction tube 80, switch 98 and severing member 102 can be moved to effect an aligned yarn path at the shoulder 68 over the free end of the collet 50.

As the yarn 10' is drawn into this suction tube 80 across the arm 100 of the switch 98, the speeding yarn speed the centrifugal force of the rotating collet 50 actuates the hook 70, which engages the textured yarn 10'.

When the hook 70 engages the yarn 10 to begin collection of such yarn on the collet 50, yarn tension between the collet 50 and suction tube 80 abruptly increases. And such tension forces the speeding yarn 10 against the cutting edge 104 of the severing member 102. The member 102 severs the yarn 10.

Yarn stops running over the switch 98 upon yarn severance. The switch 98 opens. Thereupon the switch 156 closes and electrical energy is made available to the solenoid valve 124 through the time delay relay 160.

FIGS. 6 and 7 illustrate the apparatus and yarn path after yarn severance, but before movement of the package yarn hold-off 108 (which upon severance is in the yarn hold-off position). The yarn l wants to move along a path running towards mid-length of the package forming zone on the collet 50 because the location of the roller 44 is below the collet in a vertical plane passing through the mid-length of the package forming zone (package 52). But the yarn 10 can not move beyond the pin 114 into the package forming zone on the collet 50. The location of the pin 114 prevents the yarn 10' from entering the package forming zone of the collet 50 (collector 54). This situation is illustrated in FIG. 8. The rod 112 and pin 114 are located so that the advancing yarn 10' rides at the region of intersection between the rod 112 and pin 114. Hence, the yarn collects on the collector 54 (collet 50) at a temporary collection location adjacent the package formation zone. And the pin 114 determines the location of this temporary collection site. The dashed lines in FIG. 7 denoted 52 indicate the zone of package formation.

Temporary collection of yarn 10' continues until after arrival of liquid or wet treated yarn to the collet 50. Such a time is predetermined and set into the time delay relay 160. Normally the relay 160 is set for a delay of from 1 to 3 seconds after switch 156 closes, which is usually sufficient to insure liquid treated yarn has arrived at the temporary collection site from the applicator 18. Of course, the delay will vary for different distances between applicator and collector and for different linear yarn collection or process speeds.

The time delay relay 160 allows electrical energy to the solenoid valve 124 after the predetermined delay. Upon being energized, the solenoid valve 124 effects air supply to the cylinder 126 through the supply tube 128. The piston rod 140 extends. And the rod 112 is moved about its axis to dispose the pin 1.14 downwardly in the yarn pass position. During such movement the pin 114 releases the yarn l0 gradually into the yarn traversing zone (package formation zone) rather than abruptly.

The yarn 10' moves into the package formation zone where the traverse guide 62 engages the yarn 10. Package build commences.

The yarn accumulated at the temporary collection zone becomes a length of yarn available for use as an inner end for tying to the beginning end (outside end) of an other wound yam package. In the art this length of yarn is known as a tie-on-tail.

Hence, the invention operates to advance yarn to an auxiliary or interim zone as a rotary collector is brought up to speed. Subsequently, yarn collection is transferred from the auxiliary or interim collection zone to a temporary yarn collection location on the rotary collector when the rotary collector is at a selected speed. Then wet treatment or other coating is applied to the yarn traveling to the collector. Lastly, yarn collection is moved from the temporary collection location to the package formation location on the collector after arrival to the collector of yarn with wet treatment or other coating.

In a more specific sense, the invention operates to treat yarn at the start-up of a rotary collector upon which coated yarn is collected as a wound package by feeding yarn and taking-up the yarn by an interim collector at a speed matched to the feed speed of the yarn as the rotary collector is brought up to speed. Then collection of the yarn is transferred from the interim collector to a temporary collection location on the rotary collector when the collector is at a selected angular speed effective to collect the yarn at a linear yarn speed matched to the yarn feed speed. Liquid or other coating is applied to the yarn advancing to the collector. And collection of the yarn is moved from the temporary collection location to a package formation location on the collector after arrival to the collector of yarn treated with the liquid or other coating.

FIG. 9 illustrates another embodiment of yarn processing apparatus according to the principles of the in- FIG. 9 is illustrated in normal yarn collecting operation after start-up. As shown yarn 210 is collected on a winding machine 216. The apparatus uses the liquid applying applicator 18 and interim yarn handling and take-up apparatus used with the apparatus shown in FIG. 1.

A horizontally disposed serving package 220 supplies the yarn 210.

As shown the yarn 210 balloons over end from the package 220 to a pigtail 224.

From the pigtail 224 the yarn 210 moves downwardly to a turning surface 230, which is shown as the circumferential surface of a roller 232 rotatably mounted on a fixed axis.

The yarn 210 advances from the roller 232 to be collected as a wound package 252 on a collector such as a tube 254 mounted on a driven collet 250.

- The yarn collecting machine 216 is a textile winder pulling yarn 210.from the serving package 220. The winder 216 includes a yarn traversing assembly 260 like the assembly 60 of the take-up 16 shown in FIG.

The collet 250 includes a shoulder 268 and hook 270 like the shoulder 68 and hook 70 of the take-up 16.

The dashed line path indicates the path of the yarn 210 to the suction tube during initial start-up of the apparatus. The yarn handling and interim take-up ap paratus is the same as shown in FIG. 1 and functions as described in relation to the apparatus shown in FIG. 1.

It is apparent that within the scope of the invention modifications and different arrangements may be made other than as herein disclosed. The present disclosure is merely illustrative and the invention comprehends all variations thereof.

We claim:

1. The method of treating yarn at the start-up of a rotary collector upon which the treated yarn is collected as a wound package comprising:

advancing yarn to an auxiliary collection zone as the rotary collector is brought up to speed; transferring collection of the yarn from the auxiliary collection zone to a temporary collection location on the rotary collector when the rotary collector is at a selected speed; applying a coating to the yarn in its path to the collector; and moving collection of the yarn from the temporary collection location to a package formation located on the collector after arrival of liquid treated yarn to the collector.

2. The method of treating yarn at the start-up of a rotary collector upon which the treated yarn is collected as a wound package comprising:

advancing dry yarn to an auxiliary collection zone as the rotary collector is brought up to speed; transferring collection of the yarn from the auxiliary collection zone to a temporary collection location on the rotary collector when the rotary collector is at a selected speed;

applying liquid to the yarn in its path to the collector;

and

moving collection of the yarn from the temporary collection location to a package formation location on the collector after arrival of liquid treated yarn to the collector.

3. The method of treating yarn at the start-up of a rotary collector upon which the treated yarn is collected as a wound package comprising:

feeding yarn;

taking-up the fed yarn at a speed matched to the feed speed byan interim collector as the rotary collection is brought up to speed;

transferring collection of the yarn from the interim collector to a temporary collection location on the rotary collector when the rotary collector is at a selected angular speed effective to collect yarn at a linear yarn speed matched to the yarn feed speed; applying liquid to the yarn advancing to the collector;

and moving the collection of the yarn from the temporary collection location to a package formation location on the collector after arrival of liquid treated yarn to the collector. 

1. The method of treating yarn at the start-up of a rotary collector upon which the treated yarn is collected as a wound package comprising: advancing yarn to an auxiliary collection zone as the rotary collector is brought up to speed; transferring collection of the yarn from the auxiliary collection zone to a temporary collection location on the rotary collector when the rotary collector is at a selected speed; applying a coating to the yarn in its path to the collector; and moving collection of the yarn from the temporary collection location to a package formation located on the collector after arrival of liquid treated yarn to the collector.
 2. The method of treating yarn at the start-up of a rotary collector upon which the treated yarn is collected as a wound package comprising: advancing dry yarn to an auxiliary collection zone as the rotary collector is brought up to speed; transferring collection of the yarn from the auxiliary collection zone to a temporary collection location on the rotary collector when the rotary collector is at a selected speed; applying liquid to the yarn in its path to the collector; and moving collection of the yarn from the temporary collection location to a package formation location on the collector after arrival of liquid treated yarn to the collector.
 3. The method of treating yarn at the start-up of a rotary collector upon which the treated yarn is collected as a wound package comprising: feeding yarn; taking-up the fed yarn at a speed matched to the feed speed by an interim collector as the rotary collection is brought up to speed; transferring collection of the yarn from the interim collector to a temporary collection location on the rotary collector when the rotary collector is at a selected angular speed effective to collect yarn at a linear yarn speed matched to the yarn feed speed; applying liquid to the yarn advancing to the collector; and moving the collection of the yarn from the temporary collection location to a package formation location on the collector after arrival of liquid treated yarn to the collector. 